./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 18633f06cbfcb2d86a624bf68270d8235f3d798bef0344c8b1ebe935e6a76a6f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:04:00,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:04:00,250 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:04:00,256 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:04:00,257 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:04:00,284 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:04:00,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:04:00,288 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:04:00,288 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:04:00,289 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:04:00,290 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:04:00,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:04:00,292 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:04:00,294 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:04:00,295 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:04:00,296 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:04:00,297 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:04:00,301 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:04:00,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:04:00,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:04:00,303 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:04:00,303 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:04:00,304 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:04:00,304 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:04:00,305 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:04:00,305 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:04:00,306 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:04:00,306 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:04:00,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:00,307 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:04:00,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:04:00,309 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:04:00,309 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:04:00,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:04:00,310 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:04:00,310 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:04:00,310 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:04:00,311 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:04:00,311 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:04:00,311 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18633f06cbfcb2d86a624bf68270d8235f3d798bef0344c8b1ebe935e6a76a6f [2023-11-19 08:04:00,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:04:00,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:04:00,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:04:00,655 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:04:00,655 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:04:00,657 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i [2023-11-19 08:04:03,831 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:04:04,159 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:04:04,160 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i [2023-11-19 08:04:04,170 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/data/58c487688/d01d5ad171d9449bb6724b80d719f41c/FLAG0f5a0eca9 [2023-11-19 08:04:04,184 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/data/58c487688/d01d5ad171d9449bb6724b80d719f41c [2023-11-19 08:04:04,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:04:04,188 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:04:04,190 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:04,190 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:04:04,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:04:04,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:04" (1/1) ... [2023-11-19 08:04:04,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bab7180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:04, skipping insertion in model container [2023-11-19 08:04:04,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:04" (1/1) ... [2023-11-19 08:04:04,233 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:04:04,383 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i[919,932] [2023-11-19 08:04:04,463 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:04,478 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:04:04,491 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i[919,932] [2023-11-19 08:04:04,541 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:04,561 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:04:04,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:04 WrapperNode [2023-11-19 08:04:04,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:04,563 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:04,563 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:04:04,563 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:04:04,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:04" (1/1) ... [2023-11-19 08:04:04,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:04" (1/1) ... [2023-11-19 08:04:04,636 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 262 [2023-11-19 08:04:04,637 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:04,638 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:04:04,638 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:04:04,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:04:04,647 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:04" (1/1) ... [2023-11-19 08:04:04,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:04" (1/1) ... [2023-11-19 08:04:04,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:04" (1/1) ... [2023-11-19 08:04:04,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:04" (1/1) ... [2023-11-19 08:04:04,670 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:04" (1/1) ... [2023-11-19 08:04:04,674 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:04" (1/1) ... [2023-11-19 08:04:04,679 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:04" (1/1) ... [2023-11-19 08:04:04,682 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:04" (1/1) ... [2023-11-19 08:04:04,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:04:04,691 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:04:04,691 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:04:04,691 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:04:04,692 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:04" (1/1) ... [2023-11-19 08:04:04,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:04,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:04,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:04,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:04:04,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:04:04,802 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:04:04,802 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:04:04,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:04:04,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:04:04,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:04:04,939 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:04:04,943 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:04:05,623 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:04:05,640 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:04:05,640 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:04:05,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:05 BoogieIcfgContainer [2023-11-19 08:04:05,646 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:04:05,648 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:04:05,648 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:04:05,651 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:04:05,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:04:04" (1/3) ... [2023-11-19 08:04:05,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f58ac4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:05, skipping insertion in model container [2023-11-19 08:04:05,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:04" (2/3) ... [2023-11-19 08:04:05,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f58ac4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:05, skipping insertion in model container [2023-11-19 08:04:05,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:05" (3/3) ... [2023-11-19 08:04:05,654 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-34.i [2023-11-19 08:04:05,668 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:04:05,668 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:04:05,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:04:05,721 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6000e4e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>] [2023-11-19 08:04:05,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:04:05,729 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 72 states have (on average 1.5) internal successors, (108), 73 states have internal predecessors, (108), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-19 08:04:05,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-19 08:04:05,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:05,752 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:05,753 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:05,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:05,758 INFO L85 PathProgramCache]: Analyzing trace with hash 150436054, now seen corresponding path program 1 times [2023-11-19 08:04:05,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:05,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072505543] [2023-11-19 08:04:05,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:05,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:06,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:06,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072505543] [2023-11-19 08:04:06,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:04:06,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739809497] [2023-11-19 08:04:06,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:06,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:06,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:06,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:06,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:04:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:06,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:04:06,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2023-11-19 08:04:06,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:06,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739809497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:06,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:06,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:06,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193905474] [2023-11-19 08:04:06,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:06,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:04:06,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:06,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:04:06,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:04:06,618 INFO L87 Difference]: Start difference. First operand has 108 states, 72 states have (on average 1.5) internal successors, (108), 73 states have internal predecessors, (108), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-19 08:04:06,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:06,697 INFO L93 Difference]: Finished difference Result 209 states and 375 transitions. [2023-11-19 08:04:06,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:04:06,700 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 212 [2023-11-19 08:04:06,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:06,713 INFO L225 Difference]: With dead ends: 209 [2023-11-19 08:04:06,713 INFO L226 Difference]: Without dead ends: 104 [2023-11-19 08:04:06,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:04:06,729 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:06,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:04:06,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-19 08:04:06,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-11-19 08:04:06,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 69 states have (on average 1.463768115942029) internal successors, (101), 69 states have internal predecessors, (101), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-19 08:04:06,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 167 transitions. [2023-11-19 08:04:06,828 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 167 transitions. Word has length 212 [2023-11-19 08:04:06,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:06,829 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 167 transitions. [2023-11-19 08:04:06,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-19 08:04:06,831 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 167 transitions. [2023-11-19 08:04:06,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-19 08:04:06,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:06,844 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:06,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 08:04:07,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 08:04:07,060 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:07,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:07,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1416543952, now seen corresponding path program 1 times [2023-11-19 08:04:07,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:07,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861925844] [2023-11-19 08:04:07,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:07,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:07,174 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:07,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602199635] [2023-11-19 08:04:07,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:07,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:07,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:07,177 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:07,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:04:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:07,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:04:07,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-19 08:04:07,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:07,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:07,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861925844] [2023-11-19 08:04:07,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:07,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602199635] [2023-11-19 08:04:07,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602199635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:07,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:07,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:04:07,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790554802] [2023-11-19 08:04:07,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:07,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:04:07,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:07,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:04:07,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:07,876 INFO L87 Difference]: Start difference. First operand 104 states and 167 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-19 08:04:08,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:08,345 INFO L93 Difference]: Finished difference Result 317 states and 513 transitions. [2023-11-19 08:04:08,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:04:08,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 212 [2023-11-19 08:04:08,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:08,353 INFO L225 Difference]: With dead ends: 317 [2023-11-19 08:04:08,353 INFO L226 Difference]: Without dead ends: 216 [2023-11-19 08:04:08,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:04:08,358 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 209 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:08,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 692 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:04:08,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-19 08:04:08,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 106. [2023-11-19 08:04:08,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 71 states have internal predecessors, (103), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-19 08:04:08,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 169 transitions. [2023-11-19 08:04:08,414 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 169 transitions. Word has length 212 [2023-11-19 08:04:08,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:08,417 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 169 transitions. [2023-11-19 08:04:08,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-19 08:04:08,417 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 169 transitions. [2023-11-19 08:04:08,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-19 08:04:08,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:08,422 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:08,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:08,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:08,644 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:08,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:08,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1106966290, now seen corresponding path program 1 times [2023-11-19 08:04:08,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:08,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746524059] [2023-11-19 08:04:08,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:08,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:08,763 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:08,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224898861] [2023-11-19 08:04:08,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:08,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:08,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:08,765 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:08,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:04:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:08,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:04:08,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-19 08:04:09,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:09,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:09,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746524059] [2023-11-19 08:04:09,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:09,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224898861] [2023-11-19 08:04:09,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224898861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:09,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:09,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:09,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235259024] [2023-11-19 08:04:09,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:09,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:09,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:09,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:09,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:04:09,266 INFO L87 Difference]: Start difference. First operand 106 states and 169 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-19 08:04:09,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:09,446 INFO L93 Difference]: Finished difference Result 352 states and 565 transitions. [2023-11-19 08:04:09,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:04:09,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 213 [2023-11-19 08:04:09,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:09,451 INFO L225 Difference]: With dead ends: 352 [2023-11-19 08:04:09,452 INFO L226 Difference]: Without dead ends: 249 [2023-11-19 08:04:09,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:09,454 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 167 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:09,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 536 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:04:09,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-11-19 08:04:09,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 209. [2023-11-19 08:04:09,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 140 states have (on average 1.45) internal successors, (203), 140 states have internal predecessors, (203), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-19 08:04:09,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 335 transitions. [2023-11-19 08:04:09,513 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 335 transitions. Word has length 213 [2023-11-19 08:04:09,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:09,515 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 335 transitions. [2023-11-19 08:04:09,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-19 08:04:09,516 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 335 transitions. [2023-11-19 08:04:09,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-19 08:04:09,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:09,520 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:09,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:09,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:09,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:09,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:09,743 INFO L85 PathProgramCache]: Analyzing trace with hash 733142455, now seen corresponding path program 1 times [2023-11-19 08:04:09,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:09,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812097916] [2023-11-19 08:04:09,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:09,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:09,841 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:09,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171997199] [2023-11-19 08:04:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:09,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:09,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:09,843 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:09,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:04:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:10,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 08:04:10,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-19 08:04:11,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:11,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:11,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812097916] [2023-11-19 08:04:11,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:11,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171997199] [2023-11-19 08:04:11,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171997199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:11,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:11,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:04:11,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624442840] [2023-11-19 08:04:11,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:11,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:04:11,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:11,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:04:11,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:04:11,133 INFO L87 Difference]: Start difference. First operand 209 states and 335 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-19 08:04:11,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:11,649 INFO L93 Difference]: Finished difference Result 835 states and 1341 transitions. [2023-11-19 08:04:11,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:04:11,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2023-11-19 08:04:11,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:11,656 INFO L225 Difference]: With dead ends: 835 [2023-11-19 08:04:11,656 INFO L226 Difference]: Without dead ends: 629 [2023-11-19 08:04:11,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:04:11,659 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 507 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:11,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 907 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:04:11,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2023-11-19 08:04:11,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 483. [2023-11-19 08:04:11,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 312 states have (on average 1.4294871794871795) internal successors, (446), 312 states have internal predecessors, (446), 165 states have call successors, (165), 5 states have call predecessors, (165), 5 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2023-11-19 08:04:11,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 776 transitions. [2023-11-19 08:04:11,816 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 776 transitions. Word has length 214 [2023-11-19 08:04:11,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:11,818 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 776 transitions. [2023-11-19 08:04:11,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-19 08:04:11,818 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 776 transitions. [2023-11-19 08:04:11,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-19 08:04:11,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:11,822 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:11,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:12,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:12,031 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:12,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:12,032 INFO L85 PathProgramCache]: Analyzing trace with hash -872290936, now seen corresponding path program 1 times [2023-11-19 08:04:12,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:12,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746234923] [2023-11-19 08:04:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:12,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:12,131 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:12,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409103726] [2023-11-19 08:04:12,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:12,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:12,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:12,135 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:12,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:04:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:12,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-19 08:04:12,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 753 proven. 225 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2023-11-19 08:04:23,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:04:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-19 08:04:32,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:32,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746234923] [2023-11-19 08:04:32,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:32,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409103726] [2023-11-19 08:04:32,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409103726] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:32,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:04:32,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21] total 28 [2023-11-19 08:04:32,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174280425] [2023-11-19 08:04:32,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:32,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:04:32,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:32,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:04:32,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=593, Unknown=15, NotChecked=0, Total=756 [2023-11-19 08:04:32,466 INFO L87 Difference]: Start difference. First operand 483 states and 776 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-19 08:04:32,871 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse8 (mod c_~last_1_var_1_17~0 4294967296))) (let ((.cse18 (= (mod c_~var_1_18~0 256) 0)) (.cse3 (mod c_~var_1_15~0 4294967296)) (.cse28 (div (+ (- 6442450944) .cse8) 4294967296)) (.cse25 (mod c_~last_1_var_1_7~0 4294967296)) (.cse26 (+ c_~var_1_1~0 4294967296)) (.cse24 (mod c_~last_1_var_1_20~0 4294967296))) (let ((.cse0 (let ((.cse29 (= .cse24 c_~var_1_1~0))) (and (or (< .cse24 2147483648) (not .cse29)) (or (and (= .cse26 .cse24) (<= 2147483648 .cse24)) .cse29)))) (.cse1 (< .cse25 .cse24)) (.cse2 (mod (+ c_~var_1_1~0 c_~last_1_var_1_17~0) 4294967296)) (.cse13 (* (div .cse8 4294967296) 4294967296)) (.cse10 (< 0 (+ 2 .cse28))) (.cse9 (* 4294967296 .cse28)) (.cse16 (< 2147483647 .cse8)) (.cse14 (let ((.cse27 (= c_~var_1_1~0 .cse25))) (and (or (and (= .cse26 .cse25) (<= 2147483648 .cse25)) .cse27) (or (< .cse25 2147483648) (not .cse27))))) (.cse15 (< .cse24 (+ .cse25 1))) (.cse21 (forall ((v_z_69 Int)) (or (< .cse8 (+ (mod (mod .cse3 v_z_69) 4294967296) 2147483650)) (< v_z_69 0) (< 4294967295 v_z_69)))) (.cse4 (= 64 c_~var_1_14~0)) (.cse5 (not .cse18)) (.cse12 (+ .cse8 2147483646)) (.cse6 (mod (+ c_~var_1_1~0 c_~var_1_20~0) 4294967296)) (.cse17 (= (mod c_~var_1_12~0 256) c_~var_1_14~0))) (and (or .cse0 .cse1 (forall ((v_z_70 Int)) (or (< 4294967295 v_z_70) (< v_z_70 0) (< .cse2 (+ (mod (mod .cse3 v_z_70) 4294967296) 1))))) (or .cse4 .cse5 (forall ((v_z_67 Int)) (or (< 4294967295 v_z_67) (< .cse6 (+ (mod (mod .cse3 v_z_67) 4294967296) 1)) (< v_z_67 0)))) (or .cse4 .cse5 (and (or (forall ((v_z_67 Int)) (let ((.cse7 (mod (mod .cse3 v_z_67) 4294967296))) (or (< 4294967295 v_z_67) (< 4294967294 .cse7) (< .cse8 (+ .cse7 .cse9 4294967299)) (< v_z_67 0)))) .cse10) (forall ((v_z_67 Int)) (let ((.cse11 (mod (mod .cse3 v_z_67) 4294967296))) (or (< 4294967295 v_z_67) (< 4294967294 .cse11) (< .cse12 (+ .cse11 .cse13)) (< v_z_67 0)))) (forall ((v_z_67 Int)) (or (< 4294967295 v_z_67) (< .cse8 (+ (mod (mod .cse3 v_z_67) 4294967296) 2147483650)) (< v_z_67 0))) (forall ((v_z_67 Int)) (or (< 4294967295 v_z_67) (< .cse8 (+ (mod (mod .cse3 v_z_67) 4294967296) 3)) (< v_z_67 0))))) (or (forall ((v_z_68 Int)) (or (< .cse2 (+ (mod (mod .cse3 v_z_68) 4294967296) 1)) (< 4294967295 v_z_68) (< v_z_68 0))) .cse14 .cse15) (or (and (forall ((v_z_69 Int)) (or (< v_z_69 0) (< .cse8 (+ (mod (mod .cse3 v_z_69) 4294967296) 2)) (< 4294967295 v_z_69))) (or (forall ((v_z_69 Int)) (or (< 4294967294 (mod (mod .cse3 v_z_69) 4294967296)) (< v_z_69 0) (< 4294967295 v_z_69))) .cse16)) .cse17 .cse18) (or .cse4 .cse5 (forall ((v_z_67 Int)) (or (< 4294967295 v_z_67) (< .cse2 (+ (mod (mod .cse3 v_z_67) 4294967296) 1)) (< v_z_67 0)))) (or .cse0 (forall ((v_z_70 Int)) (or (< 4294967295 v_z_70) (< v_z_70 0) (< .cse6 (+ (mod (mod .cse3 v_z_70) 4294967296) 1)))) .cse1) (or (forall ((v_z_69 Int)) (or (< .cse2 (+ (mod (mod .cse3 v_z_69) 4294967296) 1)) (< v_z_69 0) (< 4294967295 v_z_69))) .cse17 .cse18) (or (and (forall ((v_z_69 Int)) (let ((.cse19 (mod (mod .cse3 v_z_69) 4294967296))) (or (< 4294967294 .cse19) (< .cse12 (+ .cse19 .cse13)) (< v_z_69 0) (< 4294967295 v_z_69)))) (or .cse10 (forall ((v_z_69 Int)) (let ((.cse20 (mod (mod .cse3 v_z_69) 4294967296))) (or (< 4294967294 .cse20) (< .cse8 (+ .cse20 .cse9 4294967299)) (< v_z_69 0) (< 4294967295 v_z_69))))) (forall ((v_z_69 Int)) (or (< .cse8 (+ (mod (mod .cse3 v_z_69) 4294967296) 3)) (< v_z_69 0) (< 4294967295 v_z_69))) .cse21) .cse17 .cse18) (or .cse4 .cse5 (and (forall ((v_z_67 Int)) (or (< 4294967295 v_z_67) (< .cse8 (+ (mod (mod .cse3 v_z_67) 4294967296) 2)) (< v_z_67 0))) (or .cse16 (forall ((v_z_67 Int)) (or (< 4294967295 v_z_67) (< 4294967294 (mod (mod .cse3 v_z_67) 4294967296)) (< v_z_67 0)))))) (or (forall ((v_z_68 Int)) (or (< 4294967295 v_z_68) (< v_z_68 0) (< .cse6 (+ (mod (mod .cse3 v_z_68) 4294967296) 1)))) .cse14 .cse15) (or .cse17 (and (forall ((v_z_69 Int)) (let ((.cse22 (mod (mod .cse3 v_z_69) 4294967296))) (or (< 4294967294 .cse22) (< .cse12 .cse22) (< v_z_69 0) (< 4294967295 v_z_69)))) .cse21) .cse18) (or .cse4 .cse5 (forall ((v_z_67 Int)) (let ((.cse23 (mod (mod .cse3 v_z_67) 4294967296))) (or (< 4294967295 v_z_67) (< 4294967294 .cse23) (< .cse12 .cse23) (< v_z_67 0))))) (or (forall ((v_z_69 Int)) (or (< .cse6 (+ (mod (mod .cse3 v_z_69) 4294967296) 1)) (< v_z_69 0) (< 4294967295 v_z_69))) .cse17 .cse18))))) is different from false [2023-11-19 08:04:39,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:39,314 INFO L93 Difference]: Finished difference Result 1287 states and 2062 transitions. [2023-11-19 08:04:39,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:04:39,315 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2023-11-19 08:04:39,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:39,323 INFO L225 Difference]: With dead ends: 1287 [2023-11-19 08:04:39,323 INFO L226 Difference]: Without dead ends: 877 [2023-11-19 08:04:39,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=201, Invalid=962, Unknown=31, NotChecked=66, Total=1260 [2023-11-19 08:04:39,327 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 402 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 7 mSolverCounterUnsat, 213 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 213 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:39,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 833 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 314 Invalid, 213 Unknown, 7 Unchecked, 4.5s Time] [2023-11-19 08:04:39,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2023-11-19 08:04:39,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 723. [2023-11-19 08:04:39,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 528 states have (on average 1.4924242424242424) internal successors, (788), 532 states have internal predecessors, (788), 185 states have call successors, (185), 9 states have call predecessors, (185), 9 states have return successors, (185), 181 states have call predecessors, (185), 185 states have call successors, (185) [2023-11-19 08:04:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1158 transitions. [2023-11-19 08:04:39,520 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1158 transitions. Word has length 214 [2023-11-19 08:04:39,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:39,521 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 1158 transitions. [2023-11-19 08:04:39,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-19 08:04:39,521 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1158 transitions. [2023-11-19 08:04:39,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-19 08:04:39,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:39,525 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:39,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:39,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:39,733 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:39,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:39,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1883408186, now seen corresponding path program 1 times [2023-11-19 08:04:39,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:39,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737111393] [2023-11-19 08:04:39,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:39,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:39,778 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:39,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954294788] [2023-11-19 08:04:39,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:39,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:39,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:39,780 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:39,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:04:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:39,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 08:04:39,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:44,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-19 08:04:44,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:44,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:44,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737111393] [2023-11-19 08:04:44,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:44,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954294788] [2023-11-19 08:04:44,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954294788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:44,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:44,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 08:04:44,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383783903] [2023-11-19 08:04:44,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:44,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 08:04:44,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:44,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 08:04:44,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:04:44,553 INFO L87 Difference]: Start difference. First operand 723 states and 1158 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-19 08:04:48,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:48,124 INFO L93 Difference]: Finished difference Result 2011 states and 3223 transitions. [2023-11-19 08:04:48,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 08:04:48,126 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2023-11-19 08:04:48,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:48,141 INFO L225 Difference]: With dead ends: 2011 [2023-11-19 08:04:48,142 INFO L226 Difference]: Without dead ends: 1743 [2023-11-19 08:04:48,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-19 08:04:48,145 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 643 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:48,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1463 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-19 08:04:48,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2023-11-19 08:04:48,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1675. [2023-11-19 08:04:48,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1240 states have (on average 1.5056451612903226) internal successors, (1867), 1250 states have internal predecessors, (1867), 413 states have call successors, (413), 21 states have call predecessors, (413), 21 states have return successors, (413), 403 states have call predecessors, (413), 413 states have call successors, (413) [2023-11-19 08:04:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2693 transitions. [2023-11-19 08:04:48,539 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2693 transitions. Word has length 214 [2023-11-19 08:04:48,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:48,540 INFO L495 AbstractCegarLoop]: Abstraction has 1675 states and 2693 transitions. [2023-11-19 08:04:48,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-19 08:04:48,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2693 transitions. [2023-11-19 08:04:48,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-19 08:04:48,545 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:48,545 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:48,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484d033d-f23f-4475-b1f8-d63f6466199f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0